/Engine/Source/Runtime/GeometryCore/Public/VectorTypes.h
right-Perpendicular vector to V, ie V rotated 90 degrees clockwise
namespace UE { namespace Geometry { template<typename T> constexpr [UE::Math::TVector2](API\Runtime\Core\Math\TVector2)< T > UE::Geometry::PerpCW ( const [UE::Math::TVector2](API\Runtime\Core\Math\TVector2)< T > & V ) } }